1320145215 has 16 divisors (see below), whose sum is σ = 2126412000. Its totient is φ = 699350912.

The previous prime is 1320145201. The next prime is 1320145219. The reversal of 1320145215 is 5125410231.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1320145215 - 2¹⁶ = 1320079679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320145219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293100 + ... + 297569.

It is an arithmetic number, because the mean of its divisors is an integer number (132900750).

Almost surely, 2^1320145215 is an apocalyptic number.

1320145215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1320145215 is a deficient number, since it is larger than the sum of its proper divisors (806266785).

1320145215 is a wasteful number, since it uses less digits than its factorization.

1320145215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590826.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1320145215 is about 36333.8026498741. The cubic root of 1320145215 is about 1097.0015350814.

Adding to 1320145215 its reverse (5125410231), we get a palindrome (6445555446).

The spelling of 1320145215 in words is "one billion, three hundred twenty million, one hundred forty-five thousand, two hundred fifteen".